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A043740 Numbers n such that number of runs in the base 2 representation of n is congruent to 1 mod 7. 1
1, 3, 7, 15, 31, 63, 127, 170, 255, 298, 330, 338, 340, 342, 346, 362, 426, 511, 554, 586, 594, 596, 598, 602, 618, 650, 658, 660, 662, 666, 674, 676, 678, 680, 684, 686, 690, 692, 694, 698, 714, 722, 724, 726, 730, 746, 810, 842 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Harvey P. Dale, Table of n, a(n) for n = 1..5000

MATHEMATICA

Select[Range[1000], Mod[Length[Split[IntegerDigits[#, 2]]], 7]==1&] (* Harvey P. Dale, Nov 18 2019 *)

CROSSREFS

Sequence in context: A115567 A275715 A273672 * A336683 A283091 A277716

Adjacent sequences:  A043737 A043738 A043739 * A043741 A043742 A043743

KEYWORD

nonn,base

AUTHOR

Clark Kimberling

STATUS

approved

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Last modified June 14 03:38 EDT 2021. Contains 345018 sequences. (Running on oeis4.)